fine sizing meaning in Chinese

精筛
细粒筛分
细筛

The metallogenic elements decrease rapidly in quantity , and are concentrated in the fine size fraction , mainly in the form of sulfide facies
由于草甸发育，颗粒物质迁移受到抑止，水系碎屑沉积物仅出现在2 ~ 3级水系。
Abstract : throug analyzing on the separating process of qixing preparation plant , brought forward several recreate policy to improve separating fine size and reduce the capital , so as to increase economic efficient
文摘:通过对七星选煤厂分选工艺的分析，提出了几个改进措施，以提高其分选精度，降低吨煤成本，提高经济效益。